Model NB-E1-ACA AC Ammeter circuit board that fits inside a Chi Tai DM-7xx case. Suitable for 12 volt and 24 volt boats. Works with a 7V to 36V supply. Power consumption Supply 13.80V 27.60V----------------------------------------------------AC Ammeter C1 0.30W 0.30WChi Tai AC Voltmeter 2.51W 2.51W Functions The functions that can be set using the rotary switch are: 0 - Programmable functions - Default 50.00A ammeter1 - 50.0A ammeter2 - 100.0A ammeter3 - 150.0A ammeter4 - 200A ammeter5 - 250A ammeter6 - 300A ammeter7 - 400A ammeter8 - 500A ammeter9 - 600A ammeter Programmable Functions Plugging a PC or Mac into the micro USB socket at rear of the board allows configuration of: Display brightness Current range in 50A steps from 50A to 1000A Decimal place on or off Alert if the current falls outside of the selected range Calibration Download NordyBits Config for Windows When you are replacing an AC ammeter, it's worth checking that the wires from the current sensor are clean and screwed down tightly. Look for any signs that the plug has overheated in the past and replace it if needed. Installation Instructions Download